Lubricator



R. CONRADER.

LUBRICATOR.

APPLICATION FILED DEC. 7. 1917.

l 3 1 6,8 32 Patented Sept. 23, 1919.

ammo/44 501 V I THE COLUMBIA PLANOGRAPH (10-, WASHINGTON. D. c.

RUDOLPH CONRADER, OF ERIE, PENNSYLVANIA IfUBRICATOR.

Specification of Letters Patent.

Patented Sept. 23, 1919.

Application filed December 7, 1917. Serial No. 205,924.

To all whom it may concern.-

Be it known that I, RUDOLPH CONRADER, a citizen of the United States, residing at Erie, in the county ofaErie and State of Pennsylvania, have invented new and useful Improvements in Lubricators, .of which the following is a specification.

This invention relates to lubricators and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

The lubricator is designed for use with fluid actuated or actuating devices and is of particular advantage when used inconnection with pneumatic hammers.

The invention is illustrated in the accompanying drawings wherein the invention Fig. 1 a plan view of thelubricator with the handle for the plunger screw removed.

Fig. 5 a side elevation of ahammer with the lubricator in place.

1 marks the hammer cylinder, 2 the handle, 3 the lever for actuating the hammer controlling valve, 4; a flexible connection for supplying air to the hammer, and 5. the usual screw connection in the hammer handle for the flexible connection. These parts are of ordinary and common construction.

The lub'rioator has the connecting fitting 6 with a screw-threaded end 7 adapted to enter the screw-threaded connection 5. A

screw-threaded connection 8 similar to the connection 5 is provided at the opposite end of the fitting 6 and is adapted to receive the union 8 on the flexible connection 4:. The lubricator in this way is simply in-. terposed between the flexible connection 4; and the handle and requires no alteration in these parts.

,A screw-threaded receptacle head 9 is formed on the fitting 6 and a passage 10 leads from the inner face of this head along the walls of the fitting to the end of the fitting so as to deliver oil into position to be entrained by the air passing through the fitting. A receptacle 11 is screwed into the head 9. A plunger 12 operates in the receptacle 11 and forces oil from the re cept-acle through the passage 10, Ihg

plunger 12 is mounted on a screw 13. The screw 13 has an extension 14 extending through the end of the receptacle. A handle 15 is secured to the extension 14 by means'of a pin 16. It will be readily seen that by turning the handle 15, the screw 13 is rotated and the plunger 12 advanced so as to force oil from the receptacle.

In order to lock the screw in adjustment and to nicely determine the amount the screw is actuated so as to control the amount of oil or grease fed I provide a yielding detent catch for the handle. Sockets 1? are formed in the handle. Pawls 18 are arranged in these sockets, the .pawls having the stems 19 extending through perforations 21 in the rear walls of the sockets. Springs 20 are arranged in the sockets around the stem 19 and exert pressure against the pawls 18. Detents 22 are arranged in the face of the end of the receptacle in the path of the pawls 18 as they are rotated. I prefer to provide a series of pawls and a series of detents having a different number of paWls than detents. As shown there are four pawls and five detents. As a result one pawl will be in register with a detent at the same time but it will be observed that but a very slight movement -is required to bring some one of the pawls into register with some one of the detents. The effect of this construction is to make a very fine graduation of the adjusting mechanism with but'a fewnut 27 which is screwed onto the screwthreaded hub 26 on the plunger.

The plunger offers sufficient frictional resistance to prevent its turning when the screw is operating.

When the hammer is operating the an pressure is delivered to the receptacle through the passage 10 and the tendency would be to force the oil or, grease in the receptacle pastthe plunger into the sp e below the plunger.' To obviate this tendency I provide a neutralizing passage so that the pressure on the plunger is balanced. This is conveniently accomplished by extending the stem 13 through an opening 28 in the fitting 6. A passage 29 is arranged in the stem and communicates through a lateral passage 30 with the part of the receptacle back of the plunger.

With this construction the grease or oil can be forced forward and the amount fed can be very accurately controlled. When it is desired to fill the receptacle it is only necessary to unscrew the receptacle from the head 9 and the cup can be filled with grease or oil the plunger having been retracted by operating the screw.

By utilizing a screw locked against movement in an axial direction for actuating the plunger, the lubricator can be made to occupy Very little space. While this is of advantage in many relations it is of particular advantage in a hammer which is being constantly manipulated.

What I claim as new is 1. In a lubricator, the combination of a 7 cylinder; a fluid connection leading to the cylinder; and a lubricator delivering oil in position to be entrained by the fluid supplied by the connection, comprising an oil receptacle; means for exerting pressure on the oil in the receptacle for feeding oil from the receptacle; and means for delivering fluid from the fluid connection to the receptacle to neutralize the back pressure on the oil in the receptacle.

2. In a lubricator, the combination of a cylinder; a fluid connection leading to the cylinder; and a lubricator delivering oil in position to be entrained by the fluid supplied by the connection comprising an oil receptacle; a plunger in the receptacle; means for actuating the plunger to deliver oil; and means for neutralizing by fluid pressure ithe back pressure against the discharge of oi 3. In a lubricator, the combination of a cylinder; a fluid connection leading to the cylinder; and a lubricator delivering oil into position to be entrained by the fluid supplied by the connection, comprising an oil receptacle; a plunger in the receptacle, said receptacle having an oil passage leading from one side of the plunger to a position to dehver oil to the fluid passing to the cylinder;

a passage leading to the other side of the plunger for neutralizing the pressure on the plunger; and means for actuating the plunger.

4:. In a lubricator, the combination of a cylinder; a fluid connection leading to the cylinder; and a lubricator delivering oil in po s1t1on to be entrained by the fluid supplled by the connection, comprising an oil receptacle; a plunger in the receptacle;

means for actuating the plunger to deliver oil comprising a yielding detent catch for locking the plunger in adjustment; and means for neutralizing by fluid pressure the back pressure against the discharge of 011.

5. In a lubricator, the combination of a cylinder; a fluid connection leading to the cylinder; and a lubricator delivering 011 into position to be entrained by the fluid supplied by the connection comprlsmg an 011 receptacle; a plunger in the receptacle for forcing oil from the receptacle into position to be entrained by the fluid delivered to the cylinder; means for actuating the plunger comprising a screw locked against ax al movement; a stem for effecting a relative movement of the screw and plunger for adjusting the plunger; and a yielding detent catch for locking the stem in adjustment.

6. In a lubricator, the combination of a cylinder; a fluid connection leading to the cylinder; and a lubricator delivering oil lnto position to be entrained by the fluid supplled by the connection comprising an oil receptacle, said receptacle having-a feeding pas- V sage for the delivery of oil into the fluid delivered to the cylinder; a plunger 1n the receptacle; a screw on which the plunger is mounted; and a passage through the screw for delivering fluid to the side of the plunger opposite the feeding passage.

7. In a lubricator, the combination of a cylinder; a fluid connection leading to the cylinder; and a lubricator delivering oil into position to be entrained by the fluid supplied by the connection comprising an oil receptacle; devices for delivering oil from the receptacle to the fluid passing to the cylinder, comprising a stem which is rotated in the operation of the devices; a screw operated by the stem; and a yielding detent for locking the screw in adjustment.

8. In a lubricator, the combination of an oil receptacle; devices for delivering oil from the receptacle comprising a screw; a stem operating in connection with the screw to adjust the devices and a yielding detent device for locking the stem in adjustment comprising a series of detents and a series of pawls, one series rotating with the stem and the number of detents differing with the number of pawls.

9. In a lubricator for pneumatic hammers, the combination of a hammer cylinder; a handle therefor; a flexible air connection leading to the handle; and a lubricator secured to the handle and interposed between the handle and the flexible connection, said lubricator comprising means for delivering oil into position to be entrained by the air going to the hammer.

10. In a lubricator for pneumatic hammers, the combination of an air fitting; a receptacle on the fitting; a plunger in the receptacle; a screw on. which the: plunger is mounted; a handle for operating the screw; lateral passage leading to the receptacle and a yielding detent catch on the handle for back of the plunger; and a feeding passage locking the screw in adjustment. leading from the receptacle. 7 10 11. In a lubricator, the combination of an In testimony whereof I have hereunto se 5 oil receptacle; a plunger in the receptacle; 2, my hand.

screw on which the plunger is mounted, said screw having a longitudinal passage and a RUDOLPH CONRADER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

